CERTIFICATE of EU TYPE-APPROVAL

Transcription

1 We help ideas meet the real world CERTIFICATE of EU TYPE-APPROVAL No. DK VT200 / VT220 / VT300 / VT400 VT500 / VTDJB / VTDWI / VT150 NON-AUTOMATIC WEIGHING INSTRUMENT Issued by DELTA Danish Electronics, Light & Acoustics EU - Notified Body No In accordance with the requirements of the non-automatic weighing instrument regulation No. 560 of 23 June 1992 that implements, in Denmark, Council Directive 90/384/EEC. Issued to ATP 145, Rue des Martyrs de la Libération Pierre Benite France In respect of Non-automatic weighing instrument designated VT200 / VT220 / VT300 / VT400 / VT500 / VTDJB / VTDWI / VT150 with variants of modules. Accuracy class III Maximum capacity, Max : From 1 kg up to 99,000 kg Verification scale interval : e = Max / n Maximum number of verification scale intervals: n = (however, dependent on environment and the composition of the modules). Variants of modules and conditions for the composition of the modules are set out in the annex. The conformity with the essential requirements in annex 1 of the Directive is met by the application of the European Standard EN 45501:1992/AC:1993. The principal characteristics and approval conditions are set out in the descriptive annex to this certificate. DELTA Danish Electronics, Light & Acoustics Venlighedsvej Hørsholm Denmark Tel. (+45) Fax (+45) VAT No. DK The annex comprises 29 pages. Issued on Valid until Signatory: J. Hovgård

2 Annex page 1 of 29 Descriptive annex Contents Page 1. Name and type of instrument and modules 2 2. Description of the construction and function Construction Function 4 3. Technical data Indicator Connecting cable between the indicator and the junction box for load cells Load cells Load receptors 8 4. Interfaces and peripheral equipment Interfaces Peripheral equipment 9 5. Approval conditions Operational modes not approved Retaining of tally roll records Compatibility of modules Special conditions for verification Removable platforms Composition of modules Securing and location of seals and verification marks Securing and sealing Markings Location of CE mark of conformity and inscriptions Indicator Load receptors Pictures Composition of modules - example 29

3 Annex page 2 of Name and type of instrument and modules The weighing instrument is designated VT200 or VT220 or VT300 or VT400 or VT500 or VTDJB or VTDWI or VT150 which is a system of modules consisting of an electronic indicator, connected to one or two separate load receptor(s) and peripheral equipment such as printers or other devices, as appropriate. The instrument is a Class III, self-indicating weighing instrument with single-interval or multi-interval or multi-range. The modules are listed in sections 3.1 to Description of the construction and function 2.1 Construction Indicator Each indicator forms part of a comprehensive family VT, which covers various variants as described below. The indicator is specified in section 3.1. Variants of enclosures The indicator is available in different variants of enclosures made from either stainless steel, aluminium or plastic. Stainless steel box: The display and keyboard is mounted in the front lid. The rear panel contains cable glands for connecting load cells and peripherals etc. See Figures 1, 3, 5, 8. Aluminium / plastic box: The display and keyboard is mounted in the front lid. The rear side contains connectors for power, load cells, peripherals etc. See Figures 2, 4, 6, 7, 9, 10. Panel mount See Figures 7, 9, 10. The front panel is available in variants of displays and keyboards. Variant VT200: A LED weight display of 6 digits, 7-segments, 20 mm high, with 2 LED annunciators to indicate weighing range and 6 LED annunciators to indicate no-motion, center of zero, tare in use, net. The keyboard is of the flat membrane type with 8 keys. See Figures 1, 2. Variant VT220: A LCD weight display of 6 digits, 7-segments, 15/16 mm high, with annunciators to indicate weighing range, no-motion, battery low, center of zero, tare in use, net. The keyboard is of the flat membrane type with 8 keys. See Figures 3, 4. Variant VT300: A LCD character weight display of 6 digits, 14 mm high, with annunciators to indicate weighing range, no-motion, center of zero, tare in use and net.

4 Annex page 3 of 29 The keyboard is of the flat membrane type with 27 keys. See Figures 5, 6. Variant VT400: A LED weight display of 6 digits, 7-segments, 14 mm high, with LED annunciators to indicate no-motion, tare in use, net and weighing range. The keyboard, 6 keys, is of the flat membrane type with tactile feedback. See Figure 7. Variant VT500: A LED weight display of 9 digits, (7-segments, 10 mm high, with LED annunciators to indicate no-motion, center of zero, tare in use, net, rate, weighing range and a 2-lines by 40 character information /dialogue display. The keyboard, 33 keys, is of the flat membrane type with acoustic feedback. See Figures 8, 9. Variant VT150: A LED weight display of 6 digits, 7-segments, 14 mm high, with LED annunciators to indicate no-motion, tare in use, net and weighing range. The keyboard, 6 keys, is of the flat membrane type with tactile feedback. See Figure Weighing interfaces Variant VTDJB (Digital Junction Box): A non self indicating 4 loadcell summing box and weighing interface in a stainless steel or a plastic box. It contains all transducer electronics to excite the strain gauges,amplify,filter and convert the analogue signal of each load cell to a digital form.signals from the four inputs are combined to produce a corrected and adjusted weight value.it incorporates high performance A/D conversion including digital calibration with individual DIGITAL CORNER ADJUSTMENT. See Figures 13, 14. Variant VTDWI (Digital Weighing Interface): A non self indicating loadcell weighing interface in a stainless steel or a plastic box. It contains all transducer electronics to excite the strain gauge,amplify,filter and convert the analogue signal of the loadcells to a digital form.two signal inputs are provided which can be used as two independed weigh scales in DUAL channel mode. See Figures 11, 12. Electronics The standard instrument contains the following: - a main board circuit with digital circuit, EPROM instruction memory, RAM data memory with battery backup, Real Time Clock, serial EEPROM for storage of configuration and calibration parameters, an analogue load cell signal processing circuit enclosed in an EMC shielding box and interface circuits for serial and parallel input/output. - a display and keyboard interface board, LED or LCD type, with annunciators for center of zero, no-motion, net, memory in use, test procedure, out of range etc. The keyboards are of the flat membrane type with tactile feedback. - an optional parallel interface for printers - an optional serial (RS232 or 20mA loop or RS485A) communication interface - an optional setpoint interface

5 Annex page 4 of 29 - an optional digital input/output board - an optional analogue output board - an optional analogue load cell input board - an optional alibi (electronic tally roll) flash memory (see section ) - an optional power supply board with 230VAC transformer Load cells Set out in section Load receptors Set out in section lnterfaces and peripheral equipment Set out in section Function The VT weight indicating instrument is a microprocessor based electronic weight indicator that requires the external connection of strain gauge load cells. The weight information appears in the digital display located on the front panel and may be transmitted to peripheral equipment for recording, data processing or displaying. The indicator is equipped with a keyboard allowing e.g. zeroing the weight display, tareing, initiating a print command and the configuration/calibration of the instrument. The weight information and all the data typed by the user (codes, names, time and date etc.) can be transmitted to peripherals connected to the instrument. All the types of the instrument can be connected to peripherals such as computer systems, PCs, printers, bar codes, etc. All the types of the instrument have the same analogue circuits. The primary functions provided are described below Power-up On power-up, the indicator performs an automatic self test and verification of all data storage components to ensure correctness of instruction, calibration and data memory. During the self test the following are displayed: the software program number (refer to the User s manual) for 2 seconds. the date of issue or the version number (refer to the User s manual) for 2 seconds. all display segments and annunciators are illuminated for a short period of time and optionally all digits counting up. In case of error, appropriate error messages are given. After the test the indicator will proceed with initial zero setting. The message «ZEro» will remain in the primary weight display and/or an error message will be displayed until manual or automatic zero setting is accomplished.

6 Annex page 5 of Test function On power-up, the indicator will test all memory functions and cause all display elements to illuminate so that a visual verification of their operation can be made Displayed range The indicator displays from -2% of Max to Max+9e. Under this range, horizontal u line appears on the lower part of the display. Over this range, horizontal inverted u line appears on the upper part of the display Zero-setting Zero setting can only take place when the weight display is stable. Pressing the ZERO key causes a new zero reference to be established and the ZERO annunciator (>0<) to be illuminated. Zero-setting range and initial zero setting range are both limited to 4% of Max. from the zero point at the time of calibration Zero-tracking The weight indicator is equipped with a zero-tracking feature which operates over a range of 4% of Max and only when the indicator is at zero and there is no motion in the weight display Keyboard functions According to the software of the instrument, the keys have various functions. All key functions are described in the "Instruction manual" of the different types of indicators Tare The TARE is subtractive (T= -Max). Tare operation is possible only if the display is stable and indicates a positive number. Only one active tare is possible at a time. When a tare device is active, the annunciator NET is on. The tare value is shown on the display for a brief period of time when the DISPLAY TARE key is pressed Semiautomatic tare A weighed value is entered as a tare by pressing the TARE key, when equilibrium is stable and the indication is positive and within Max. Repeated pressing causes the tare to be cleared and the new tare entered in its place Preset tare It is possible to operate different kinds of preset tare functions Keyboard tare A keyboard tare may be entered via the KEYBOARD TARE key and the numeric keypad. When the keyboard tare is operative no other tare device is active and the net annunciator will be illuminated Fixed tare Up to 250 (depending on model) preset values associated with a unique identification code can be stored in the indicator. These are entered via the numeric keypad using the FIXED TARE program.

7 Annex page 6 of 29 When the preset tare is operative no other tare device is active and the net annunciator will be illuminated. Preset tares together with their associated identification code may be displayed or printed while the weighing mode is made inactive Product tare For models VT300 and VT500, up to 99 product associated preset tares can be stored. These are entered via the keypad using the PRODUCT EDIT program or from external computer via the serial peripheral interface. The Product tare may be entered as a tare upon initiation of a weight order execution, when no other tare device is active. The net annunciator will be illuminated Fully automatic tare A fully automatic tare device may be switched ON or OFF during the setup, for use in batch recipe weighing only. When the fully automatic tare is operative, the weighed value is entered as a tare before each weighing. Successive ingredient weighing causes the actual tare to be cleared and the new tare entered in its place First / second weighing tare For the types VT300, VT500, there are suitable software with first and second weighing procedures. In these cases, the tare is one of the two weighed values (first or second weight) and it is memorised automatically; the other value is the gross weight. The net weight is calculated automatically from the two values Printing The instrument can be connected to parallel or serial printers with the proper interface. It can be programmed to print G (gross), N (net), T (semi-automatic tare), PT (preset tare), date and time of weighing (first and second weighing), consecutive number of printing, codes, name of the company or any other message that may be required. Printing is not possible when the indicator is not stable or the display has a negative value Setpoints If the instrument is connected to external devices depending on weight values, the output setpoints can be programmed from the instrument's keyboard to control them Analog output With the optional board installed, the indicator gives a current output proportional to the displayed weight in the range of 0-20, or 4-20 ma, or 0-10 V Alibi memory With the option installed, the indicator stores weight transactions transmitted to a non-approved peripheral instead of printing the weight. The alibi flash is internal to the instrument and no external access is possible. For each transaction, a unique sequential number and the weight and parity are stored in flash memory. The alibi memory may be erased only after printout of its contents. Only gross weights are stored. If the indicator is in net mode, an error will be displayed for 2 sec and no alibi storage and no weight transmissions to external equipment will occur. The capacity of the alibi is 9999 records. At each weight transaction, the weight will be transmitted to a peripheral only after successful writing to the flash. When the alibi flash is full a warning (Err 55) will be displayed. Operation continues by resetting the unique identification number to If the memory is found corrupted, an error

8 Annex page 7 of 29 message (Err 57) will be displayed. The information stored in the alibi may be displayed on the primary weight display (PWD) of the indicator or printed using the following functions. VIEW of the contents of each record This is performed by Fn55 (VT200, VT220, VT400) or by selecting MENU\MISC\ALIBI\VIEW (VT300, VT500). The PWD shows the last recorded alibi identification numbed. Press PRINT key to display the corresponding weight or key in the desired identification number and press PRINT key to show the weight. Press TARE key to return to identification nr display. Press ZERO key to exit the alibi view function and return to weight display mode. Printout of all alibi memory This is performed by Fn56 (VT200, VT220, VT400) or by selecting MENU\MISC\ALIBI\PRINT (VT300, VT500). A serial printer must have been connected to the printer port (RS232C) with 80 column paper Weight display mode The indicator may display the weight from scale #1 or scale #2 connected to the analogue inputs #1 and #2 respectively. The indicator may also display the sum of the two scales provided that the decimal point and display step of the two scales are the same. The indication sum 1+2 is the algebraic sum of the two indications. The displayed range, zeroing range, tare max of each scale are not affected. Out of range is indicated if any of the two scales is out of range. The zero and/or tare commands are software added, so if one of the scales cannot be zeroed or tared the command is not executed. If any of the two scales is in motion the zero, tare, print or store commands is inhibited. Example: Max 1 = kg Max 2 = kg Max 1+2 = kg e 1 = 10kg e 2 =10kg e 1+2 = 20kg 3. Technical data The weighing instrument is composed of separate modules, which are set out as follows: 3.1 Indicator The indicator has the following characteristics: Accuracy class: III Weighing range: Single-interval or multi-interval Maximum number of Verification Scale Intervals: Internal resolution: counts Fractional factor: p'i = 0.5 Minimum input voltage per VSI: 0.4 µv Minimum signal voltage for dead load: to 10 mv Analogue range: to 20 mv Excitation voltage: 5 VDC switched polarity

9 Annex page 8 of 29 Circuit for remote sense: Remote sense using 6-wires in the load cell cable Minimum input impedance: 35 ohm (10 load cells of 350 ohm) Maximum input impedance: 2000 ohm Maximum line resistance between indicator and junction box for load cell(s), if any: 5 ohm for each wire Mains power supply: 220/240 VAC, 50/60 Hz adapter (9-15 VDC) Peripheral interface: Set out in section Connecting cable between the indicator and the junction box for load cells wire system (VT200, VT220, VT300, VT400, VT500, VTDWI) Maximum length: Line: wire system (VTDJB) Maximum length: Line: wire RS485 (VT150) 300 m / mm² 6 wires, shielded 12 m 4 wires, shielded Maximum length: 1000 m. Line: 2 wires, shielded (digital serial protective interface) 3.3 Load cells Any load cell(s) may be used for instruments under this certificate of type approval, provided the following conditions are met: 1) An OIML Certificate of Conformity (R60) or a test certificate (EN 45501), respectively, is issued for the load cell by a Notified Body responsible for type examination under the Directive 90/384/EEC. 2) The certificate contains the load cell types and the necessary load cell data required for the manufacturer s declaration of compatibility of modules (WELMEC 2, Issue 4, 2004, No. 11, and any particular installation requirements). A load cell marked NH is allowed only if humidity testing to EN has been performed. 3) The compatibility of load cells and indicator is established by the manufacturer by means of the compatibility of modules form, contained in the above WELMEC 2 document, or the like, at the time of EC verification or declaration of EC conformity of type. 4) The load transmission must conform to one of the examples shown in the WELMEC 2.4 Guide for load cells. 3.4 Load receptors Mechanical mountings are allowed provided that they comply with EN paragraph 6 or section 3.3. Mechanical platforms are allowed having any size and capacity, and the number of load cells not exceeding 10. The load receptors may be equipped with appropriate load cells as specified in section 3.3. Removable platforms shall be equipped with level indicators.

10 Annex page 9 of Critical load receptor (pallet weigher) Load receptors for weighing of pallets are allowed, if they fulfil the following, Class : III Max : 3000 kg e : 200 g n : 3000 Construction : See figure 16 Levelling : Bubble indicator Load cells : 4 load cells type ACB (DK0199-R ), VHL (DK0199-R ), RHL/RBL (TC5949), or HLC/BLC (TC 2163) connected to a junction box. Optional: Rollers for displacement 4. Interfaces and peripheral equipment 4.1 Interfaces As an option, the indicator may be supplied with peripheral interfaces, which allow peripheral equipment to be connected. The peripheral interfaces are positioned on the same side as the load cell interface. The indicator may have the following optional interfaces. - Serial communication ports RS232 C - Serial communication ports RS485A - Serial communication port 20 ma current loop - Parallel communication port (centronics) - Digital inputs - outputs (24VDC, opto-isolated) - Analogue output 0-20 or 4-20mA or 0-10V (galvanically isolated) - 2 nd load cell analogue input. The ports are characterised " Protective interfaces" according to paragraph 8.4 in the Directive. The cables to external equipment must be shielded and having the shields well connected to the cable connector's casing. In case of cable glands the cable shields must be connected to ground just after the cable inlet. The cable connectors must be fixed by screws into screw locks, which are in good contact with the metal cabinet. 4.2 Peripheral equipment Connection between the weight indicator and peripheral equipment is allowed by screened cable. The instrument may be supplied with any of the following peripheral equipment: CITIZEN SWIFT 90 form printer The CITIZEN SWIFT 90 is a parallel driven form printer equipped with automatic paper out detection that signals an error to the indicator if the printer runs out of paper. The printer has a combined on/off and line feed switch and may be equipped with a real time clock option for printing time and date with each weighing result.

11 Annex page 10 of Alternative printers for legal transactions The instrument may be connected to any simple recipient printer with a CE mark of conformity (see WELMEC 2 issue 4). A printer like this may be used for legal transactions. 5. Approval conditions 5.1 Operational modes not approved Operation of the instrument in such a way that the instrument becomes an automatic weighing instrument is not covered by this approval Piece counting mode is not covered by this approval. 5.2 Retaining of tally roll records Conditions for retaining of tally roll records as documentation for legal transactions carried out using non-verified peripheral equipment are not covered by this type approval, as no common rule is adopted by the member states as yet. It is up to the national authority to decide on these conditions until a common rule is adopted. 5.3 Compatibility of modules In case of composition of modules, WELMEC 2 (Issue 4), July 2004, paragraph 11 shall be satisfied. 6. Special conditions for verification 6.1 Removable platforms For instruments liable to be tilted, section of the Standard EN apply. 6.2 Composition of modules The environmental conditions should be taken into consideration by the composition of modules for a complete weighing instrument, for example instruments with load receptors placed outdoors and having no special protection against the weather. The composition of modules shall agree with section 5.3. An example of a declaration of conformity for the composition of modules is shown in section Securing and location of seals and verification marks 7.1 Securing and sealing (Refer to figure 15). Seals shall bear the verification mark of a notified body or alternative mark of the manufacturer according to ANNEX II, section 2.3 of the Directive 90/384/EEC.

12 Annex page 11 of Indicator Access to the configuration and calibration facility is achieved by removing the internal calibration jumper "JP1" (located on the main printed circuit board next to the analogue circuit) and entering a password. Sealing of the access to the jumper is accomplished with a brittle plastic sticker over one of the screws that keeps the cabinet closed. Alternatively, the indicator may be sealed by an Audit Trail counter which is incremented each time access to the device specific parameters is attempted (see WELMEC 2 POINT 3.4). When "JP1" is placed the word "SEALED" will be shown on the display following a software command (VTDJB,VTDWI) or by executing Fn 48 (VT150, VT200, VT220, VT400) or MENU\MISC\OIML (VT300, VT500). Following this the Audit Trail counter is displayed. A label with an inscribed count (all digits permanently printed and pre and suffixed by a hyphen) is placed on the rear side of the instrument. The label is designated CAL-Nr and may not be removed without destruction Indicator - load cell connector - load receptor Securing of the indicator, load receptor and load cell combined is done by one of the following ways: sealing of the load cell connector with the indicator by a lead wire seal or a non-removable label inserting the serial number of the load receptor as part of the principal inscriptions contained on the indicator identification label the load receptor bears the serial number of the indicator on its data plate Junction box for load cells Access to the junction box, if any, is prevented by use of lead seals or by sealing it with brittle plastic stickers Peripheral interfaces All peripheral interfaces are "protective"; they neither allow manipulation with weighing data or legal setup, nor change of the performance of the weighing instrument in any way that would alter the legality of the weighing. 7.2 Markings (Refer to figures 1-14) Indicator A green M-sticker and a sticker with verification marks may be placed on the front or top side of the indicator Remote display A remote display shall bear a green M-sticker, if used for trade purposes Printers used for legal transactions Printers covered by this type approval and other printers according to section 4.2 shall bear a green M-sticker, if they are used for legal transactions.

13 Annex page 12 of Non-verified peripheral equipment If such equipment is connected to the weighing instrument, it shall bear a red M-sticker. 8. Location of CE mark of conformity and inscriptions 8.1 Indicator CE mark A sticker with the CE mark of conformity and year of production is located at the inscriptions Inscriptions Manufacturer's trademark and name and the type designation is located on the front panel. Located on the front panel: Max, Min, e =, accuracy class, serial no., certificate no., model/type and manufacturer's name. On a label located on the indicator rear housing or at the mains cable inlet: Electrical data 8.2 Load receptors On a data plate: Manufacturer's name, type, serial number, capacity. Left to the manufacturer's choice as provided in section 7.1.2: Serial no. of the indicator.

14 Annex page 13 of Pictures Figure 1. VT200 Indicator in stainless steel enclosure

15 Annex page 14 of 29 Figure 2. VT200 Indicator in Aluminium/Plastic enclosure

16 Annex page 15 of 29 Figure 3. VT220 Indicator in stainless steel enclosure

17 Annex page 16 of 29 Figure 4. VT220 Indicator in Aluminium/Plastic enclosure

18 Annex page 17 of 29 Figure 5. VT300 Indicator in stainless steel enclosure

19 Annex page 18 of 29 Figure 6. VT300 Indicator in Aluminium/Plastic enclosure

20 Annex page 19 of 29 Figure 7. VT400 Indicator in panel mount

21 Annex page 20 of 29 Figure 8. VT500 Indicator in stainless steel enclosure

22 Annex page 21 of 29 Figure 9. VT500 Indicator in panel mount metal enclosure

23 Annex page 22 of 29 Figure 10. VT150 Indicator in panel mount plastic enclosure

24 Annex page 23 of 29 Figure 11. Digital Weighing Interface in stainless steel/plastic enclosure (PG9+DB9 connector)

25 Annex page 24 of 29 Figure 12. Digital Weighing Interface in stainless steel/plastic enclosure (all PG9 cable glands)

26 Annex page 25 of 29 Figure 13. Digital Junction Box Interface in stainless steel/plastic enclosure (PG9+DB9 connector)

27 Annex page 26 of 29 Figure 14. Digital Junction Box Interface in stainless steel/plastic enclosure (all PG9 cable glands)

28 Annex page 27 of 29 ALUMINIUM / PLASTIC ENCLOSURE ou ou ou LEA D NON REMOVABLE LABEL PANEL MOUNT ENCLOSURE NON REMOVABLE LABEL LEAD SEAL STAINLESS STEEL ENCLOSURE Figure 15. VT Family sealing details

29 Annex page 28 of 29 Figure 16. Movable load receptor for pallets

30 Annex page 29 of Composition of modules - example